Pith Number

pith:N7JJP2KQ

pith:2010:N7JJP2KQBJTURHQ4FV2YTHRGP4

not attested not anchored not stored refs pending

High Dust Depletion in Two Intervening Quasar Absorption Line Systems with the 2175-{\AA} Extinction Bump at $z\sim1.4$

Hongyan Zhou, Jian Ge, Junfeng Wang, J. Xavier Prochaska, Peng Jiang, Tinggui Wang

arxiv:1009.5418 v1 · 2010-09-28 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N7JJP2KQBJTURHQ4FV2YTHRGP4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:05:16.531080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fd297e9500a67489e1c2d75899e267f216ad9bfa80763097e8e24ae967aa036

Aliases

arxiv: 1009.5418 · arxiv_version: 1009.5418v1 · doi: 10.48550/arxiv.1009.5418 · pith_short_12: N7JJP2KQBJTU · pith_short_16: N7JJP2KQBJTURHQ4 · pith_short_8: N7JJP2KQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/N7JJP2KQBJTURHQ4FV2YTHRGP4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 6fd297e9500a67489e1c2d75899e267f216ad9bfa80763097e8e24ae967aa036

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75319a023c8a4c216b66ecb6654f2e5c59370008fd2af93b7b873b1a0f42a8fe",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-28T00:39:13Z",
    "title_canon_sha256": "b76f2215cc0466e34469463a4211fbfdb9acdd28dd21f088a48710cd1f18bfbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5418",
    "kind": "arxiv",
    "version": 1
  }
}